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Relationships between Terrain Features and Forecasting Errors of Surface Wind Speeds in a Mesoscale Numerical Weather Prediction Model

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Advances in Atmospheric Sciences 2024年第6期41卷 1161-1170页

作者： wenbo xue Hui YU Shengming TANG Wei HUANG Chinese Academy of Meteorological Sciences Beijing 100081China University of Chinese Academy of Sciences Beijing 101408China Shanghai Typhoon Institute/CMA Shanghai 200030China Key Laboratory of Numerical Modeling for Tropical Cyclone/CMA Shanghai 200030China

Numerical weather prediction(NWP)models have always presented large forecasting errors of surface wind speeds over regions with complex *** this study,surface wind forecasts from an operational NWP model,the SMS-WARR(Shanghai Meteorological Service-WRF ADAS Rapid Refresh System),are analyzed to quantitatively reveal the relationships between the forecasted surface wind speed errors and terrain features,with the intent of providing clues to better apply the NWP model to complex terrain *** terrain features are described by three parameters:the standard deviation of the model grid-scale orography,terrain height error of the model,and slope *** results show that the forecast bias has a unimodal distribution with a change in the standard deviation of *** minimum ME(the mean value of bias)is 1.2 m s^(-1) when the standard deviation is between 60 and 70 m.A positive correlation exists between bias and terrain height error,with the ME increasing by 10%−30%for every 200 m increase in terrain height *** ME decreases by 65.6%when slope angle increases from(0.5°−1.5°)to larger than 3.5°for uphill winds but increases by 35.4%when the absolute value of slope angle increases from(0.5°−1.5°)to(2.5°−3.5°)for downhill *** sensitivity experiments are carried out with a model output statistical(MOS)calibration model for surface wind speeds and ME(RMSE)has been reduced by 90%(30%)by introducing terrain parameters,demonstrating the value of this study.

关键词： surface wind speed terrain features error analysis MOS calibration model

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Multiscale interaction analysis of Landfall Typhoon Lekima (2019) based on vorticity equation diagnosis

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TROPICAL CYCLONE RESEARCH AND REVIEW 2024年第2期13卷 136-146页

作者： xue, wenbo Yu, Hui Tang, Shengming Chinese Acad Meteorol Sci Beijing Peoples R China Univ Chinese Acad Sci Beijing Peoples R China Shanghai Typhoon Inst China Meteorol Adm Shanghai Peoples R China

To investigate the multiscale interaction characteristics of Landfall Typhoon Lekima (2019), this study analyzed the characteristics of the different scale vortex structure and interactions among different scales based on vorticity equation diagnosis. The analysis is based on the simulation results of the WRF model which has been thoroughly verified. The main results are as follows: the original vorticity dominated by the meso-alpha scale vorticity increases with height and then decreases, with maximum vorticity distributed at 900 hPa. The meso-beta scale vorticity varies significantly with altitude, while the meso-gamma scale vorticity field exhibits obvious positive vorticity below 850 hPa. The meso-alpha scale vorticity tendency primarily maintains negative, contributing significantly to the overall reduction in the original vorticity field over time. The increase in mid-to-upper-level (above 550 hPa) original vorticity is mainly related to the variations in the meso-beta and meso-gamma scale vorticity fields. The original vorticity dominated by the meso-alpha scale vorticity increases with height and then decreases, and the whole layer vorticity decreases over time. The meso-beta scale vorticity varies significantly with altitude and time, while the meso-gamma scale vorticity field consistently exhibits significant positive vorticity below 850 hPa. The vorticity equation diagnosis revealed that the primary source terms of the vorticity tendencies are the twisting and stretching terms, and the main sink terms being horizontal and vertical vorticity transport terms below 900 hPa. The source terms and sink terms exchange above 850 hPa. Scale separation results show that the primary contributions of all impact factors originate from the meso-alpha and meso-gamma scale fields (accounting for over 80% of the total), with the contribution of the meso-alpha scale being less than that of the meso-gamma scale and a notable contribution over 35.5% of the interactions betwe

关键词： Tropical cyclone Multiscale interaction Vorticity equation diagnosis TROPICAL CYCLONES TOPOGRAPHY

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鳜味觉受体Ⅰ型(T1R)家族基因基因组鉴定与表达分析

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中国水产科学 2024年第2期31卷 155-164页

作者：薛文博姚晓丽谢金洋高锦华赵金良上海海洋大学农业农村部淡水水产种质资源重点实验室上海海洋大学水产动物遗传育种中心上海市协同创新中心上海海洋大学水产科学国家级实验教学中心

味觉受体Ⅰ型(taste receptor type I, T1R)家族在对环境营养物质的识别中发挥关键作用。为理解鳜(Siniperca chuatsi)味觉受体I型家族成员数目、表达特征与其肉食性之间的关联,利用基因家族分析从鳜基因组数据中鉴定了T1R家族成员基因... 详细信息

味觉受体Ⅰ型(taste receptor type I, T1R)家族在对环境营养物质的识别中发挥关键作用。为理解鳜(Siniperca chuatsi)味觉受体I型家族成员数目、表达特征与其肉食性之间的关联,利用基因家族分析从鳜基因组数据中鉴定了T1R家族成员基因,荧光定量PCR测定了孵化后0～30 d (0～30 dph, days post hatching)、驯食饲料后T1R家族成员基因表达水平变化。结果显示,鳜T1R家族包括4个基因:t1r1、t1r2a1、t1r2a2、t1r3, 4个基因序列、结构域完整; t1r2基因出现了复制(t1r2a1、t1r2a2), t1r2a1、t1r2a2外显子结构一致,结构域相同,仅第3、4、5内含子和5'端UTR长度不同。选择压力(dN/dS)分析表明,鳜t1r1正向选择,t1r2s和t1r3负选择,鲜味受体基因t1r1进化压力可能与其独特食性(终生以活饵为食)有关。4个味觉受体I型基因t1r1、t1r2a1、t1r2a2、t1r3自开口前开始表达,20 d后表达增加,其中鲜味受体基因t1r1表达水平显著高于甜味受体基因t1r2s;饲料驯食养殖后, 4个t1r基因表达量下调,其中鲜味受体基因t1r1表达下调最为显著。研究结果为鳜味觉受体基因对其肉食性形成与适应研究提供了基础资料。

关键词：鳜味觉受体Ⅰ型(T1R)家族基因组鉴定发育表达

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Developing China's roadmap for air quality improvement:A review on technology development and future prospects

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Journal of Environmental Sciences 2023年第1期123卷 510-521页

作者： Yueyi Feng Miao Ning wenbo xue Miaomiao Cheng Yu Lei Institute of Atmospheric Environment Chinese Academy of Environmental PlanningBeijing 100012China Chinese Research Academy of Environmental Sciences Beijing 100012China

Air pollution control policies in China have been experiencing profound changes,highlighting a strategic transformation from total pollutant emission control to air quality improvement,along with the shifting targets starting from acid rain and NO_(x)emissions to PM_(2.5)pollution,and then the emerging O_(3)*** marvelous achievements have been made with the dramatic decrease of SO_(2)emission and fundamental improvement of PM_(2.5)*** these achievements,China has proposed Beautiful China target through 2035 and the goal of 2030 carbon peak and 2060 carbon neutrality,which impose stricter requirements on air quality and synergistic mitigation with Greenhouse Gas(GHG)*** this background,an integrated multi-objective and multi-benefit roadmap is required to provide decision support for China’s long-term air quality improvement *** paper systematically reviews the technical system for developing the air quality improvement roadmap,which was integrated from the research output of China’s National Key R&D Program for Research on Atmospheric Pollution Factors and Control Technologies(hereafter Special NKP),covering mid-and long-term air quality target setting techniques,quantitative analysis techniques for emission reduction targets corresponding to air quality targets,and pathway optimization techniques for realizing reduction *** experience and lessons derived from the reviews have implications for the reformation of China’s air quality improvement roadmap in facing challenges of synergistic mitigation of PM_(2.5)and O_(3),and the coupling with climate change mitigation.

关键词： Air quality management Air quality targets Mitigation pathway optimization Dynamic emission scenario Cost-benefit evaluation Integrated decision-support model

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鳜体色图案区转录组和酪氨酸酶家族基因在发育过程中的表达

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中国水产科学 2024年第5期31卷 501-512页

作者：谢金洋李帅帅薛文博蔡康宁赵金良赵岩上海海洋大学农业农村部淡水水产种质资源重点实验室上海海洋大学水产动物遗传育种中心上海市协同创新中心上海海洋大学水产科学国家级实验教学示范中心

鳜(Siniperca chuatsi)复杂的体色图案兼具生态意义和经济价值。为探究鳜色彩图案形成的分子机制,对鳜体侧的图案区、非图案区以及腹部的皮肤进行转录组分析,并利用荧光定量PCR技术测定酪氨酸酶家族基因在鳜胚胎至出膜后30 d内表达变化... 详细信息

鳜(Siniperca chuatsi)复杂的体色图案兼具生态意义和经济价值。为探究鳜色彩图案形成的分子机制,对鳜体侧的图案区、非图案区以及腹部的皮肤进行转录组分析,并利用荧光定量PCR技术测定酪氨酸酶家族基因在鳜胚胎至出膜后30 d内表达变化。结果显示, 3处皮肤区域间差异表达基因主要富集在ECM-受体相互作用、紧密连接、黏着等通路,且以MAPK通路为核心通路。紧密连接蛋白(tight junction protein 1a, tjp1a)基因在非图案区的表达量显著高于图案和腹部区,酪氨酸酶相关蛋白1(tyrosinase-relatedprotein1,tyrp1)、多巴色素异构酶(dopachrome tautomerase, dct)、小眼畸形相关转录因子a (melanocyte inducing transcription factor a, mitfa)等基因在图案区的表达量显著高于非图案区和腹部区,刺鼠信号蛋白1 (agoutisignalingprotein 1, asip1)基因在腹部区的表达量要显著高于图案和非图案区。鳜在早期发育中,酪氨酸酶(tyrosinase, tyr)和dct基因在原肠期开始显著增加(P<0.05), tyrp1基因在出膜后1 d表达开始显著增加(P<0.05), tyr、tyrp1、dct基因在出膜7 d左右表达显著下降,到出膜25 d维持一定水平。综上,细胞间通讯基因(tjp1a)和色素沉着基因(tyrp1、dct、mitfa、asip1)对鳜体色图案的形成发挥重要作用,鳜胚胎早期黑色素的合成主要依赖tyr、dct基因,出膜后黑色素的合成由tyr、tyrp1、dct基因共同作用。

关键词：鳜体色图案转录组酪氨酸酶家族

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融合逆密度梯度和双线性插值的深海地图构建

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兵工自动化 2024年第6期43卷 80-84页

作者：彭晓勇杨旭王以龙薛文博陈飞袁明新江苏科技大学机电与动力工程学院江苏张家港215600 连云港杰瑞自动化有限公司江苏连云港222006

为提高深海探测机器人水下作业的效率和安全性,提出一种融合逆密度梯度聚类和双线性插值的地图构建方法。将机器人所采集的海底环境图像进行灰度化、分割和去噪预处理;对障碍物区域的图像像素进行聚类;根据探测机器人结构尺寸对聚类后... 详细信息

为提高深海探测机器人水下作业的效率和安全性,提出一种融合逆密度梯度聚类和双线性插值的地图构建方法。将机器人所采集的海底环境图像进行灰度化、分割和去噪预处理;对障碍物区域的图像像素进行聚类;根据探测机器人结构尺寸对聚类后二值图像进行改进双线性插值的局部膨胀处理,获得最终环境地图。2种不同环境的地图构建结果表明:传统Meanshift算法和双线性插值算法相比,融合逆密度梯度聚类和双线性插值的图像处理能够实现地图中非可行区域的确定,检出率平均提升26.1%,漏检率平均降低31.4%,该方法有效。

关键词：深海地图构建逆密度梯度聚类双线性插值

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Impact of physical representations in CALMET on the simulated wind field over land during Super Typhoon Meranti(2016)

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Frontiers of Earth Science 2019年第4期13卷 744-757页

作者： Sui HUANG Shengming TANG Hui YU wenbo xue Pingzhi FANG Peiyan CHEN Chinese Academy of Meteorological Sciences Beijing 100081China Shanghai Typhoon Institute China Meteorological AdministrationShanghai 200030China Key Laboratory of Numerical Modeling for Tropical Cyclones China Meteorological Administration Shanghai 200030China The Joint Laboratory for Typhoon Forecasting Technique Applications between Shanghai Typhoon Institute and Wenzhou Meteorological Bureau Wenzhou 325000China

A WRF(Weather Research and Forecasting Model)/CALMET(California Meteorological Model)coupled system is used to investigate the impact of physical representations in CALMET on simulations of the near-surface wind field of Super Typhoon Meranti(2016).The coupled system is configured with a horizontal grid spacing of 3 km in WRF and 500 m in CALMET,*** model performance of the coupled WRF/CALMET system is evaluated by comparing the results of simulations with observational data from 981 automatic surface stations in Fujian *** root mean square error(RMSE)of the wind speed at 10 m in all CALMET simulations is significantly less than the WRF simulation by 20%^30%,suggesting that the coupled WRF/CALMET system is capable of representing more realistic simulated wind speed than the mesoscale model *** impacts of three physical representations including blocking effects,kinematic effects of terrain and slope flows in CALMET are examined in a specified local region called Shishe *** results show that before the typhoon landfall in Xiamen,a net downslope flow that is tangent to the terrain is generated in the west of Shishe Mountain due to blocking effects with magnitude exceeding 10 m/***,the blocking effects seem to take no effect in the strong wind area after typhoon *** being affected by the typhoon strong wind or not,the slope flows move downslope at night and upslope in the daytime due to the diurnal variability of the local heat flux with magnitude smaller than 3 m/*** kinematic effects of terrain,which are speculated to play a significant role in the typhoon strong wind area,can only be applied to atmospheric flows in stable conditions when the wind field is quasinondivergent.

关键词： physical representations CALMET wind field Super Typhoon Meranti

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Impacts of meteorology and emission variations on the heavy air pollution episode in North China around the 2020 Spring Festival

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Science China Earth Sciences 2021年第2期64卷 329-339页

作者： wenbo xue Xurong SHI Gang YAN Jinnan WANG Yanling XU Qian TANG Yanli WANG Yixuan ZHENG Yu LEI Center of Air Modeling and Systems Analysis Chinese Academy for Environmental PlanningBeijing 100012China State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation Chinese Academy for Environmental PlanningBeijing 100012China

Based on the Weather Research and Forecasting model and the Models-3 community multi-scale air quality model(WRF-CMAQ),this study analyzes the impacts of meteorological conditions and changes in air pollutant emissions on the heavy air pollution episode occurred over North China around the 2020 Spring Festival(January to Februray 2020).Regional reductions in air pollutant emissions required to eliminate the PM2.5 heavy pollution episode are also *** results found that meteorological conditions for the Beijing-Tianjin-Hebei and surrounding"2+26"cities are the worst during the heavy pollution episode around the 2020 Spring Festival as compared with two other typical heavy pollution episodes that occurred after ***,because of the substantial reductions in air pollutant emissions in the"2+26"cities in recent years,and the32%extra reduction in emissions during January to February 2020 compared with the baseline emission levels of the autumn and winter of 2019 to 2020,the maximum PM2.5 level during this heavy pollution episode around the 2020 Spring Festival was much lower than that in the other two typical ***,these emission reductions are still not enough to eliminate regional heavy pollution *** with the actual emission levels during January to February 2020,a 20%extra reduction in air pollutant emissions in the"2+26"cities(or a 45%extra reduction compared with baseline emission levels of the autumn and winter of 2019 to 2020)could help to generally eliminate regionwide severe pollution episodes,and avoid heavy pollution episodes that last three or more consecutive days in Beijing;a 40%extra reduction in emissions(or a 60%extra reduction compared with baseline emission levels of the autumn and winter of 2019 to 2020)could help to generally eliminate regionwide and continuous heavy pollution *** analysis finds that during the clean period after the heavy pollution episode around the 2020 Spring Festival,the regionwide

关键词： "2+26"cities 2020 Spring Festival Heavy air pollution episode WRF-CMAQ model

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华北农村清洁取暖成本收益的空间不均衡

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Science Bulletin 2024年第12期69卷 1852-1856页

作者：张伟张鹏飞赵静汪峰尚昱竹方培薛文博张鹏岩宋玲玲蒋洪强王金南李佳硕 State Environmental Protection Key Laboratory of Environmental Planning and Policy Simulation Chinese Academy of Environmental PlanningBeijing 100041China The Center for Beijing-Tianjin-Hebei Regional Environment and Ecology Chinese Academy of Environmental PlanningBeijing 100041China Institute of Blue and Green Development Shandong UniversityWeihai 264209China School of Business Nanjing University of Information Science&TechnologyNanjing 210044China Institute of Climate Economy and Low-carbon Industry Nanjing University of Information Science&TechnologyNanjing 210044China Center of Air Quality Simulation and System Analysis Chinese Academy of Environmental PlanningBeijing 100041China School of Urban Economics and Public Administration Capital University of Economics and BusinessBeijing 100070China

Bulk coal combustion in rural households is a major contributor to PM_(2.5)pollution in Northern China[1,2].To promote the energy transition and reduce bulk coal combustion for heating in rural areas,China initiated the Winter Clean Heating Action Plan in Rural Northern China in 2017,hereinafter referred to as rural clean heating(RCH)[3].The 2+26 region,comprising Beijing,Tianjin,and 26 other municipalities in the surrounding area(Fig.S1 online),is the key implementation area for the RCH.

关键词：华北农村 Rural 成本收益

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The Geology, Fluid Inclusions, and O-S Isotopes of the Mibei Gold Deposit, Hunan Province, Southern China

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Acta Geologica Sinica(English Edition) 2024年第4期98卷 992-1006页

作者： xue Wenhao LIANG Yayun LI Xiaofeng LI Mingyi XIE wenbo PENG xue XIA Rui HE Hongsheng XIAO Jincheng School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Geophysical and Geochemical Survey Institute of Hunan Changsha 410116China New Geological Energy Exploration and Development Engineering Technology Research Center of Hunan Changsha 410116China State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences(Beijing)Beijing 100083China Comprehensive Survey Command Center for Natural Resources China Geological SurveyBeijing 100055China

The Mibei gold deposit,located in the southwestern part of the xuefengshan uplift zone,the middle section of the Jiangnan orogenic belt in southern China,has estimated gold resources of approximately seven *** deposit is primarily a quartz vein-type gold deposit,with ore bodies occurring mainly within Neoproterozoic *** main metallic minerals in the ore are pyrite,chalcopyrite,and *** this study,the petrography and microthermometry of ore-forming fluid inclusions,oxygen isotopes of gold-bearing quartz,and sulfur isotopes of goldbearing sulfides and arsenopyrite were *** types of fluid inclusions were identified:type Ⅰa three-phase inclusions comprising vapor and two phases of liquids(V_(CO_(2))+L_(CO_(2))+L_(H2O)),type Ⅰb two-phase liquids(L_(CO_(2))+L_(H2O)),typeⅡ two-phase vapor-rich inclusions(V/V+L> 50%),and type Ⅲ pure liquid *** Ⅰ inclusions were heated uniformly to the liquid phase,type Ⅱ inclusions were heated uniformly to the gas phase,and type Ⅲ inclusions were heated without *** general,the temperature range of homogenization to liquid phase of fluid inclusions in the Mibei gold deposit is 204-227℃.The salinity of the inclusion ranges from 4.6 to 12.2 wt% NaCl *** δ~(18)O_(SMOW) of gold-bearing quartz varies from 16.9‰ to 17.5‰.The δ~(18)O_(H2O) of gold-bearing quartz are varied from 6.5‰ to 7.5‰.The δ~(34)S values of gold-bearing pyrite range from 1.7‰ to 6.8‰.The δ~(34)S values of gold-bearing arsenopy rite range from 5.6%o to 5.9‰.Theδ~(34)S values of pyrite from wall rocks slate range from 6.4‰ to 11.6‰.This evidence implies that the ore-forming fluids of the Mibei gold deposit originated from magmatic-hydrothermal processes,mixing with minor S from the surrounding *** with the evolution of the Jiangnan orogenic belt,due to the magmatic and tectonic activities of the xuefengshan uplift during the Caledonian period,the fault seal mechanism controlled the ore-forming p

关键词： ore-forming fluid ore genesis Mibei gold deposit xuefengshan uplift zone Jiangnan orogenic belt

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